[calligraplan] doc: Revert "Documentation: Put the whole doc into one file to not confuse xml2po"

[Luigi Toscano]

Git commit aea3c301c1ed3f74885c55b4004dd3453b9233eb by Luigi Toscano.
Committed on 27/03/2020 at 10:59.
Pushed by ltoscano into branch 'master'.

Revert "Documentation: Put the whole doc into one file to not confuse xml2po"

Keep the documentation split:
- the reason for splitting (a monster document) are still around;
- we do have split documentation (krusader, kstars, etc)
- in fact the last changes to calligraplan documentation
  seems to have worked and all the messages are extracted.

This reverts commit ae96aa81034933691ed9a4c186b3375a69f75c01.

A  +8    -0    doc/contexthelp.docbook
A  +110  -0    doc/costbreakdownstructureeditor.docbook
A  +1267 -0    doc/creatingodtreporttemplates.docbook
A  +28   -0    doc/creatingproject.docbook
A  +153  -0    doc/definitions.docbook
A  +11   -0    doc/guidelines.docbook
M  +35   -3932 doc/index.docbook
A  +31   -0    doc/introduction.docbook
A  +44   -0    doc/mainworkspace.docbook
A  +10   -0    doc/managingresources.docbook
A  +98   -0    doc/milestoneganttview.docbook
A  +18   -0    doc/planintroduction.docbook
A  +33   -0    doc/projectperformanceview.docbook
A  +5    -0    doc/reports.docbook
A  +122  -0    doc/reportsgeneratorview.docbook
A  +110  -0    doc/resourceassignmentganttview.docbook
A  +104  -0    doc/resourceassignmentview.docbook
A  +222  -0    doc/resourceeditor.docbook
A  +278  -0    doc/scheduleseditor.docbook
A  +11   -0    doc/startupview.docbook
A  +132  -0    doc/taskdependencyeditorgraphical.docbook
A  +6    -0    doc/taskdependencyeditorlist.docbook
A  +369  -0    doc/taskeditor.docbook
A  +173  -0    doc/taskexecutionview.docbook
A  +106  -0    doc/taskganttview.docbook
A  +36   -0    doc/taskperformanceview.docbook
A  +214  -0    doc/taskstatusview.docbook
A  +163  -0    doc/usingtheviews.docbook
A  +50   -0    doc/viewsandeditors.docbook
A  +87   -0    doc/workandvacationeditor.docbook

https://commits.kde.org/calligraplan/aea3c301c1ed3f74885c55b4004dd3453b9233eb